Understand that a two-dimensional figure is congruent to another if the second can be obtained from the first by a sequence of rotations, reflections, and translations; given two congruent figures, describe a sequence that exhibits the congruence between them.

Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two-dimensional figures, describe a sequence that exhibits the similarity between them.

Warm Up

10 minutes

Each day, students complete a warm-up that usually consists of spiraling the previous day's material, in addition to older material. Warm-up problems also sometimes extend lessons that students have encountered before to more unfamiliar contexts.

For a video narrative about how I structure each lesson, and how the warm-up fits in, click here.

8 - 7 WU106 Rotations 1.docx

8 - 7 WU106 Rotations 1.pdf

Play of the Day

40 minutes

8 - 7 POTD106 Rotations 1.docx.doc.docx

8 - 7 POTD106 Rotations 1.pdf

Huddle

10 minutes

I like reviewing the GOLD question for the huddle for this lesson, since it pushes kids to rotate a single point, allowing them to see the pattern that emerges for any incremental 90-degree rotation.

I tell the kids that I do NOT expect them to memorize these rules, but to apply them by sketching their own visuals and then applying systematic, logical thinking. I love the kind of thinking process this pushes.

8 - 7 POTD106 Rotations 1.pdf

Homework

15 minutes

Homework is to be completed at home and should take the student approximately 15 minutes.